*{
    box-sizing: border-box;
}
html,body,#app{
    height:100%;
    margin: 0;
    padding: 0;
}
body{
    background: #eee;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
h1{
    font-weight: 200;
    color: #3b414c;
    font-size: 20px;
}
ul{
    list-style-type: none;
    padding: 0;
    margin: 0;
}
.app {
    white-space: nowrap;
    height:100%;
}
.list {
    position: relative;
    display: inline-block;
    vertical-align: top;
    white-space: normal;
    height: 100%;
    width: 33%;
    padding: 0 20px;
    overflow: auto;
}
.list:not(:last-child):after{
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 1px;
    height: 99%;
    background: linear-gradient(to bottom, #eee 0%, #ccc 50%, #eee 100%) fixed;
}
.card {
    position: relative;
    z-index: 1;
    background: #fff;
    width: 100%;
    padding: 10px 10px 10px 15px;
    margin: 0 0 10px 0;
    overflow: auto;
    border: 1px solid #e5e5df;
    border-radius: 3px;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.25);
}
.card__title {
    font-weight: bold;
    border-bottom: solid 5px transparent;
}
.card__title:before {
    display: inline-block;
    width: 1em;
    content: '';
}
.card__title--is-open:before {
    content: '';
}
.checklist__task:first-child {
    margin-top: 10px;
    padding-top: 10px;
    border-top: dashed 1px #ddd;
}
.checklist__task--remove:after{
    display: inline-block;
    color: #d66;
    content: "+";
}
.checklist--add-task {
    border: 1px dashed #bbb;
    width: 100%;
    padding: 10px;
    margin-top: 15px;
    border-radius: 3px;
}